finite game

For example, a game of Reversi is over when all the squares of the board have been filled up, if not sooner. Most chess games end with one side trapping the opponent’s king. Theoretically, certain scenarios could go on indefinitely if both sides lack the resources to trap the opponent’s king; for example, if White has only a king and a knight, and Black has only the king left, Black could theoretically evade indefinitely if it weren’t for the stalemate rule.